Create segment

Corporate-only filters executed exclusively over the immutable company_public_v2 sidecar. At least one effective anchor is required: provincia, cnae_prefix, a capital bound, a year bound or recent_days. forma and estado are deliberately not accepted; stored legacy filters containing either fail closed. Without provincia/cnae_prefix, capital and temporal anchors cannot be combined; capital-only anchors accept only capital_desc/capital_asc (or the default), and temporal-only anchors accept only recent/oldest (or the default).

Saved account segment. Extra migration columns may be returned for backward compatibility.